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Feat/regexp split to array #25189

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15 changes: 15 additions & 0 deletions datafusion/functions/src/regex/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@ pub mod regexpinstr;
pub mod regexplike;
pub mod regexpmatch;
pub mod regexpreplace;
pub mod regexpsplittoarray;

/// Arrow's regex kernels treat null flags as no flags, but reject empty flags.
/// Normalize empty strings without copying the string buffers.
Expand All @@ -45,6 +46,10 @@ make_udf_function!(regexpinstr::RegexpInstrFunc, regexp_instr);
make_udf_function!(regexpmatch::RegexpMatchFunc, regexp_match);
make_udf_function!(regexplike::RegexpLikeFunc, regexp_like);
make_udf_function!(regexpreplace::RegexpReplaceFunc, regexp_replace);
make_udf_function!(
regexpsplittoarray::RegexpSplitToArrayFunc,
regexp_split_to_array
);

pub mod expr_fn {
use datafusion_expr::Expr;
Expand All @@ -67,6 +72,15 @@ pub mod expr_fn {
super::regexp_count().call(args)
}

/// Splits a string into an array using a regular-expression delimiter.
pub fn regexp_split_to_array(values: Expr, regex: Expr, flags: Option<Expr>) -> Expr {
let mut args = vec![values, regex];
if let Some(flags) = flags {
args.push(flags);
}
super::regexp_split_to_array().call(args)
}

/// Returns a list of regular expression matches in a string.
pub fn regexp_match(values: Expr, regex: Expr, flags: Option<Expr>) -> Expr {
let mut args = vec![values, regex];
Expand Down Expand Up @@ -136,6 +150,7 @@ pub fn functions() -> Vec<Arc<datafusion_expr::ScalarUDF>> {
regexp_instr(),
regexp_like(),
regexp_replace(),
regexp_split_to_array(),
]
}

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